Dynamic Characteristics of Quasi-Zero Stiffness Vibration Isolation System with Magnetic Rings

被引：0
|
作者：
Li Z. [1 ]
Zhang Z. [1 ]
Jiang W. [2 ]
Liu Q. [1 ]
Ren Z. [1 ]
Wang Y. [1 ]
Song Y. [1 ]
机构：
[1] School of Mechanical Engineering, Taiyuan University of Science and Technology, Shanxi, Taiyuan
[2] School of Mechanical and Aerospace Engineering, Jilin University, Jilin, Changchun
来源：
Binggong Xuebao/Acta Armamentarii | 2023年 / 44卷 / 06期
关键词：
low-frequency vibration isolation; magnetic rings; nonlinear dynamics; quasi-zero stiffness; 运eywords: special vehicle;
D O I：
10.12382/bgxb.2022.0194
中图分类号：
学科分类号：
摘要：
Due to the complexity and changeability of the operational and driving environment of special vehicles, personnel and large onboard precision equipment are often exposed to the low-frequency and large-amplitude vibration environment, which directly affects the operational efficiency, even endangers personnel safety and causes serious equipment failure. In order to effectively isolate its low-frequency vibrations, a quasi-zero-stiffness vibration isolation system with magnetic rings is developed, and its system stiffness characteristics and vibration isolation characteristics are studied theoretically and experimentally. Based on the magnetoelectric theory and stiffness coupling theory, the theoretical models of positive and negative stiffness are established and the equivalent stiffness of the system is obtained, and its stiffness mechanism and parameter characteristics are analyzed. The nonlinear dynamic model of the quasi-zero stiffness vibration isolation system is further developed, and the nonlinear dynamic equations of the system are solved by the harmonic balance method and the Newton-Raphson iterative method, its vibration isolation characteristics are analyzed and evaluated, and an experimental bench is built for verification. The results show that: the negative stiffness mechanism has obvious negative stiffness effect and can produce a wider quasi-zero stiffness interval with the positive stiffness system; compared with the linear system, the isolation frequency band of the quasi-zero stiffness vibration isolation system is widened to the low-frequency region by 71. 9%, and the resonance peak reduced by 65. 7%, the displacement response amplitude decreased by 75%, and the acceleration response amplitude decreased by 80% in the steady-state interval,meaning that the system has a wider vibration isolation frequency band and a larger vibration decay rate. © 2023 China Ordnance Society. All rights reserved.
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页码：1784 / 1794
页数：10
相关论文
共 29 条
  • [1] ZHAO L L, YU Y W, ZHOU C C, Et al., Throttle slice opening size and damping characteristics of cab damper for special vehicles [ J ], Acta Armanentarii, 39, 4, pp. 645-654, (2018)
  • [2] FANG L H, ZHENG X Y, CAI H T, Et al., Development of tank and armored vehicle protection technology, Si Chuan Ordnance Journal, 35, 3, pp. 23-26, (2014)
  • [3] HARRIS C M, PIERSOL A G., Harris, shock and vibration handbook [ M], (2010)
  • [4] PLATUS D L., Negative-stiffness-mechanism vibration isolation systems, Physica A: Statistical Mechanics and its Applications, 161, pp. 44-54, (1992)
  • [5] ROBERTSON W S, KIDNER M R F, CAZZOLATO B S, Et al., Theoretical design parameters for a quasi-zero stiffness magnetic spring for vibration isolation, Journal of Sound and Vibration, 326, 1, pp. 88-103, (2009)
  • [6] LIU X T, SUN J Y, XIAO F, Et al., Principle and performance of a quasi-zero stiffness isolator for micro-vibration isolation, Journal of Vibration and Shock, 32, 21, pp. 69-73, (2013)
  • [7] LIU Q, LI Z L, WANG J M, Et al., Research progress on quasi-zero stiffness low-frequency vibration isolation technology [ J ], Journal of Mechanical Strength, 42, 4, pp. 13-22, (2020)
  • [8] ZHANG J Z, LI D, DONG S, Et al., Study on ultra-low frequency parallel connection isolator used for precision instruments [ J ], China Mechanical Engineering, 15, 1, pp. 69-71, (2004)
  • [9] HU G J, ZHOU S T, LI H G., Static analysis and experiment of a nonlinear vibration isolator, Noise and Vibration Control, 31, 6, pp. 69-71, (2011)
  • [10] LU C H, BAI H B, YANG J C, Et al., Research on ultra-low frequency nonlinear vibration isolation system, Noise and Vibration Control, 30, 4, pp. 10-12, (2010)
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